scout: Meilisearch engine pagination total broken

• Scout Version: 9.4.6
• Scout Driver: MeiliSearch
• Laravel Version: 8.83.6
• PHP Version: 8.0.16
• Database Driver & Version: Mysql 8.0.28-0ubuntu0.20.04.3
• SDK Version (If using a third-party service): 0.23.1

Description:

This issue is related with https://github.com/laravel/scout/issues/535 and map id with key name, the solution was https://github.com/laravel/scout/commit/8a7782c5ce72b9407a3cb2e29a4865cf4efc964b creating mapIdsFrom method

The same issue is occurring with the method keys in Engine, does not take into account mapIdsFrom and call directly mapIds, which breaks the pagination count.

A solution is create keysFrom method:

/**
     * Get the results of the query as a Collection of primary keys.
     *
     * @param  \Laravel\Scout\Builder  $builder
     * @param  string  $key
     * @return \Illuminate\Support\Collection
     */
    public function keysFrom(Builder $builder, $key)
    {
        return $this->mapIdsFrom($this->search($builder), $key);
    }

and modify the getTotalCount method:

/**
     * Get the total number of results from the Scout engine, or fallback to query builder.
     *
     * @param  mixed  $results
     * @return int
     */
    protected function getTotalCount($results)
    {
        $engine = $this->engine();

        $totalCount = $engine->getTotalCount($results);

        if (is_null($this->queryCallback)) {
            return $totalCount;
        }

        $ids = $engine->mapIdsFrom(
            $results,
            $key = Str::afterLast($this->model->getScoutKeyName(), '.')
        )->all();

        if (count($ids) < $totalCount) {
            $ids = $engine->keysFrom(tap(clone $this, function ($builder) use ($totalCount) {
                $builder->take(
                    is_null($this->limit) ? $totalCount : min($this->limit, $totalCount)
                );
            }), $key)->all();
        }

        return $this->model->queryScoutModelsByIds(
            $this, $ids
        )->toBase()->getCountForPagination();
    }

Changing $key = Str::afterLast($this->model->getScoutKeyName(), '.') and calling $engine->keysFrom reusing the $key variable

Steps To Reproduce:

Using query() reproduce the bug

return Post::search($search)->query(function($query) { $query->with(‘image’); })->paginate(5);